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Old 10-09-2013, 08:00 PM
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mapbike mapbike is offline
Motorized Bicycle Elite Member
Join Date: Mar 2010
Location: Central Texas
Posts: 5,379
Default Re: How durable are these engines?? 66cc

Originally Posted by mrfubs View Post
Attachment 64058

That cylinder was a week old was still running 25:1 and still breaking in. My current cyl is doing good at 25:1 so far but has premature scoring.
Wow...... from the looks of that im gonna say no matter how you tried to break that engine in it would have failed, im gonna say that was a defunk from the get go...... sure looks ugly no doubt.

I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!
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